Yes, it does cost a few pounds more than your usual disposable camera, but you're getting a waterproof camera, for heaven's sake! Fujifilm says its plastic case is water-resistant to a depth of 10m, so it's likely you're going to be in trouble long before the camera is. The Fujifilm Quicksnap Marine comes loaded with 24 exposures of Fujifilm ISO 800 Superia colour negative film which you should be able to get developed at any regular high street chemist or online photo lab. Control is limited, obviously, in that there isn't any. The exposure is fixed at 1/125sec at f/10 so really you're going to need good outdoor light to get decent results, but that's true of any single-use camera.

The BMPCC4K has a built in 5” monitor, which makes viewing and framing your subjects underwater a breeze. The LCD screen on the BMPCC4K is lovely -- it’s sharp, bright and has good contrast. The BMPCC4K has no in camera stabilization, but this can be solved in post-production with the free Davinci Resolve subscription that comes included with the camera. Also, the BMPCC4K only has single-point autofocus, which is challenging when shooting video underwater. The solution to this, which most videographers prefer anyway, is to use manual focus. With the Nauticam BMPCCII Underwater Housing, there are numerous MFT lenses that Nauticam supports manual focus for. To see a list of supported lenses with the Nauticam BMPCCII Underwater Housing, see our Nauticam Port Chart.

Before you start digging into the reviews, a few notes on choosing a cam that's right for you. You'll definitely want to consider frame rate, expressed as frames per second (fps). Some action cameras offer up to 240fps recording, while others only go to 30fps. For standard playback, 30fps is perfectly fine. It's when you want to slow footage down in editing to create dramatic scenes that frame rate matters. Footage captured at 240fps can be slowed down and played back smoothly at one-quarter speed. You may also want to go for a cinematic look, in which case you'll want one that has a 24fps capture option, the same speed used by most Hollywood productions.